LRD Watch DR1 · catalog object
LRDW J141957.83+525459.4
Images
3.2″ across, north up, east left, resampled from the deepest mosaic covering the object in each band; ticks mark the catalogue position. Each band is stretched on its own noise; the composite shares one flux scale, so its colour is real. No coverage in F090W, F277W.
Spectral energy distribution
- NIRCam wide
- NIRCam medium
- MIRI
- 2σ upper limit (S/N < 2)
At a glance
- Tier
- TENTATIVE
- Found by
- BH* channel
- Redshift
- 5.685 DJA grade 3, PRISM
- Spectral shape
- unclassifiable de Graaff+25 criteria
- F444W
- 25.61 AB S/N 76, 0.16″ aperture
- F277W − F444W
- not in the colour lane
- BH* share
- 0.63 bhs_bb5400_b4; Δχ² galaxy 0.7, dwarf 5.5
- Compactness
- growth ratio 1.634 stars 2.251
- Balmer break
- 6.81 ± 0.99 F356W/F200W, red:Hb+OIII
- Image vetting
- half-stack pass; no flags raised
- Literature
- 4 catalogue(s), 4 AGN paper(s) within 0.013″
Vetting
- Image vettingnot applicable
- Half-stack testpass
- Artifact risknone
- Neighbournone
- Extendedno
- BH* channelevidence dchi2_gal=0.7 dchi2_bd=5.5
- BH* channelBH* share 0.63 below 0.8 (composite)
Redshifts
Each redshift keeps its own column. Photometric redshifts of little red dots are unreliable: against spectra, about a third of AGN-template redshifts (z_agn; 31 of 95 in the last purity run) and about half of galaxy-template redshifts at z > 3 were catastrophic outliers (methods Section 8).
| Column | What it is | z | Source |
|---|---|---|---|
z_spec | Spectroscopic, DJA grade 3 | 5.6852 | rubies-egs52-v4_prism-clear_4233_37124.spec.fits |
z_vet | Adopted by vetting | 5.6852 | zspec:dja_specz_grade3.csv:37124 |
z_phot | Photometric (P(z) peak) | — | not fitted |
z_bhs | BH* channel fit | 5.640 | bhs_bb5400_b4 |
z_agn | Colour-lane fit | — | — |
Spectral checks
- V-shape (spectrum)
- unclassifiable
- Star (spectrum)
- no
- V-shape (photometry)
- not measurable βUV not measured, βopt not measured at z_agn
- Line in F410M
- none 1 line-free optical band(s)
- Line-ambiguous
- no
- Settling verdict
- not evaluated
Literature
Published objects within 1″ of this position. A match is a positional recovery, not an adopted classification.
- de Graaff et al. (2025)
- Kocevski et al. (2024)
- Kokorev et al. (2024)
- Weibel et al. (2026), BH*-dominated sample
- Baccus+2026 (DJA census) broad-line AGN
- Hviding+2025 broad-line AGN
- Jones+2025 broad-line AGN
- Taylor+2025 (CEERS/RUBIES) broad-line AGN
Photometry
Circular aperture of radius 0.16″ at each band's native resolution, background from a 0.40–0.65″ annulus, programmes combined by inverse variance. For a point source multiply by the field's aperture correction (r = 0.16″ → 0.70″). Grey rows are below S/N 2.
| Band | Instrument | Pivot (µm) | f (nJy) | σ (nJy) | AB mag | S/N | Ap. corr. |
|---|---|---|---|---|---|---|---|
| F115W | NIRCam wide | 1.154 | 9.55 | 3.75 | 28.95 | 2.5 | 1.41 |
| F150W | NIRCam wide | 1.501 | 14.04 | 3.02 | 28.53 | 4.7 | 1.38 |
| F162M | NIRCam medium | 1.627 | 19.42 | 4.76 | 28.18 | 4.1 | 1.33 |
| F182M | NIRCam medium | 1.845 | 12.69 | 4.55 | 28.64 | 2.8 | 1.36 |
| F200W | NIRCam wide | 1.989 | 17.03 | 2.46 | 28.32 | 6.9 | 1.44 |
| F356W | NIRCam wide | 3.568 | 115.89 | 1.93 | 26.24 | 60.0 | 1.53 |
| F410M | NIRCam medium | 4.082 | 149.15 | 3.52 | 25.97 | 42.4 | 1.55 |
| F430M | NIRCam medium | 4.281 | 302.01 | 6.79 | 25.20 | 44.5 | 1.62 |
| F444W | NIRCam wide | 4.404 | 207.79 | 2.75 | 25.61 | 75.5 | 1.60 |
| F1500W | MIRI | 15.048 | 3.43 | 36.06 | 30.06 | 0.1 | — |
Provenance
- Field
- EGS (CEERS NIRSpec P5) (
ceersnirspecp5mrmsata) - Programmes
01345, 02279, 07814, 08559behind every mosaic the field measured- Pipeline rows merged
- 1 all at one position
- Detection pass
- original
- Release build
33af9933d1cc2026-10-17T14:29:44Z
Image sources
| Band | Mosaic | Native pixel | Coverage |
|---|---|---|---|
| F115W | jw01345-o064_t044_nircam_clear-f115w_i2d.fits | 0.031″ | 1.00 |
| F150W | jw01345-o064_t044_nircam_clear-f150w_i2d.fits | 0.031″ | 1.00 |
| F200W | jw01345-o064_t044_nircam_clear-f200w_i2d.fits | 0.031″ | 1.00 |
| F356W | jw01345-o064_t044_nircam_clear-f356w_i2d.fits | 0.063″ | 1.00 |
| F410M | jw01345-o064_t044_nircam_clear-f410m_i2d.fits | 0.063″ | 1.00 |
| F444W | jw01345-o064_t044_nircam_clear-f444w_i2d.fits | 0.063″ | 1.00 |
Cite
Anderson, Jordan (2026). LRD Watch DR1: little red dot candidates from an independent search of public JWST imaging (Version DR1) [Data set]. Cerin Amroth Research. Zenodo. https://doi.org/10.5281/zenodo.23062632 Object LRDW J141957.83+525459.4.
CC BY 4.0. Please also acknowledge the JWST programmes that took the data. LRD Watch DR1 is a vetted candidate catalogue, not a complete census: it has no selection function and cannot on its own give number densities. About the release.